194 MAINE AGRICUI^TURAIv KXPERIME^NT STATION. I9I3. 



The total for the fifth ancestral generation of "Figgis 20th is 7. 

 In the corresponding table we find for A^y, Z=2 1.875, or 

 Z4=2i.875. 



The total for the next (sixth) ancestral generation is 16. The 

 table for this generation gives for v4 = i6, Z^25.ooo, or Z5=: 

 25.000. 



The total of the next generation is 41. For A^=r.4i the seventh 

 generation table gives Z6^32.03i. 



For the eighth ancestral generation the total is 92. The table 

 for this generation shows that when A=^g2, Z7=35.938. 



The total for the ninth generation is 191. For A=igi the 

 ninth generation table gives Z8^37.305. 



For the tenth generation the total is 389. The last of the tables 

 gives for A=:T,Sg, Za=;^'y.gS&. 



INBREEDING COEFFIOIENT TABLES. 



SECOND 



THIRD 



FOURTH 





FIETH 





ANCESTRAL 



ANCESTRAL 



ANCESTRAL 





ANCESTRAL 





GENERATION. 



GENERATION. 



GENERATION 





GENERATION 





Pn-,1=^ 



Pn.l=^ 



Pn+1 = ^^ 



j 



Pn^l=^^ 





A 



Z 



A 



Z 



A 



Z 



A 



Z 



A 



Z 



1 



25.000 



1 



12.600 



1 



6.250 



1 



3.125 



16 



50.000 



2 



50.000 



2 



25.000 



2 



12.500 



2 



6.250 



17 



53.125 



3 



75.000 



3 



37.600 



3 



18.750 



3 



9.375 



18 



66.250 



_ 



— 



4 



60.000 



4 



25.000 



4 



12 . 500 



19 



59.375 



- 



- 



5 



62.600 



5 



31.260 



5 



15.625 



20 



62 . 500 



_ 



_ 



6 



75.000 



6 



37.500 



6 



18.750 



21 



65.625 



_ 



_ 



7 



87.500 



7 



43 . 750 



7 



21.875 



22 



68 . 750 



— 



— 



— 



— 



8 



60.000 



8 



26.000 



23 



71.876 



_ 



_ 



— 



— 



9 



56.250 



9 



28.125 



24 



75.000 



- 



- 



- 



- 



10 



62.500 



10 



31.250 



25 



78.125 



_ 



_ 



_ 



_ 



11 



68.750 



11 



34.375 



26 



81.250 



— 



— 



— 



— 



12 



75.000 



12 



37.500 



27 



84.375 



_ 



— 



_ 



— 



13 



81.250 



13 



40.625 



28 



87 . 500 



— 



— 



— 



— 



14 



87.500 



14 



43.750 



29 



90 . 625 



- 



- 



- 



— 



15 



93.750 



15 



46.876 



30 



93 . 750 



